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Fire protection sleeves

Fire protection sleeve is a special product used to provide passive protection against fire and smoke. These elements are installed at the points of intersection of various barriers by the pipeline.

On average, the design of a fire sleeve includes a housing and a special fire protection sleeves material that expands when the ambient temperature rises to a certain level. The coupling swells, after which the entire opening is covered with thermally expanding material, isolating the room in which the fire started from the other part of the building.

Fire protection sleeves are able to resist fire for 3 hours. They are also easy to assemble and dismantle.

In our online store you can buy fire-retardant couplings from leading manufacturers:

  • Ogneza;
  • Ograx;
  • HL;
  • Geberit;
  • Unitek;
  • Sinicon;
  • Wavin.
Photo Name Article Price
OGNEZA Fire collar, lock type "Light", red, d 160 [Code number: pm_160]
Details
pm_160

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • Housing consists of two parts, detachable
  • High fire resistance - EI-180
  • Products are certified
  • Metal parts are painted with powder paint which increases the corrosion resistance
  • Easy assembly/disassembly
  • Coefficient of expansion is not less than 900%
  • Collar is triggered at 15 seconds at temperature of +150 °C, complete overlap occurs at the intersection at 4 minute
  • Keeps characteristics at temperatures from -50 °C to +80 °C
  • 30 years lifetime
  • Lock type: Light

Installation method

PM structure

 

  • The case is a metal cuff and is made of cold-rolled or galvanized steel (thickness from 0.5 to 2 mm). Painted with weatherproof paint.
  • The case is connected using a reliable Russian-made latch made of galvanized steel.
  • The fire-retardant liner is located inside the coupling, held by the cloves bent inward. They also provide directional expansion of the fire retardant liner during a fire.
  • The eyelets with holes can be easily bent. Their length is 35 mm, which simplifies installation.
Outside diameter Inner diameter Height Thickness of thermally expanding liner Colour Weight
mm mm mm mm   gr
195 160 90 7 red 900

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGNEZA Fire collar, d 16/20 (price on request) [Code number: pm_16_20]
Details
pm_16_20

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • Housing consists of two parts, detachable
  • High fire resistance - EI-180
  • Products are certified
  • Metal parts are painted with powder paint which increases the corrosion resistance
  • Easy assembly/disassembly
  • Coefficient of expansion is not less than 900%
  • Collar is triggered at 15 seconds at temperature of +150 °C, complete overlap occurs at the intersection at 4 minute
  • Keeps characteristics at temperatures from -50 °C to +80 °C
  • 30 years lifetime
Outside diameter Inner diameter Height Thickness of thermally expanding liner Colour Weight
mm mm mm mm   gr
29,0 ± 3,0 16,0 ± 3,0 50,0 4,0 ± 1,0 light gray 55 ± 10

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGRAX-PM fire collar, d 22 (for pipes DN 16) [Code number: pm-16/20]
Details
pm-16/20 320 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • case consists of two parts
  • thickness of the OGRAX flame retardant liner is 10 mm
  • keeps operational characteristics at air humidity up to 100% in the temperature range from -50 °C to + 60 °C
  • high fire resistance (more than three parts, EI-180)
  • easy assembly/disassembly
  • no special maintenance
  • moisture resistance
  • durability
  • warranty period of operation - at least 25 years (under conditions precluding corrosion of the metal case)
External diameter Height Pipe diameter
mm mm mm
22 20 16
OGNEZA Fire collar, lock type "Light", gray, d 20 [Code number: pm_20]
Details
pm_20 308 rub

Application purpose:

  • For pipeline communications made of combustible plastic materials (PP, PE, PVC)
  • For residential (including multi-apartment) buildings, hotels and hostels, social and medical institutions, shopping centers, airports and railway stations, industrial enterprises, etc
  • To protect premises from fire and smoke

Characteristics:

  • The case is detachable, there is a tie-lock, so that the fire coupling can be used on already installed pipelines;
  • Metal parts are powder coated for corrosion protection;
  • Swelling ratio: not less than 900%;
  • Product color: gray;
  • Lock type: Light;
  • Fire resistance limit: 180 minutes;
  • Service life: 30 years.

Operating principle:

During a fire, the thermally expanding liner of the fire muff expands tenfold, resulting in the formation of a solid foam-coke foam that fills the hole in the ceiling. This is quite effective at blocking fire.

Installation method

PM structure

 

  • The case is a metal cuff and is made of cold-rolled or galvanized steel (thickness from 0.5 to 2 mm). Painted with weatherproof paint.
  • The case is connected using a reliable Russian-made latch made of galvanized steel.
  • The fire-retardant liner is located inside the coupling, held by the cloves bent inward. They also provide directional expansion of the fire retardant liner during a fire.
  • The eyelets with holes can be easily bent. Their length is 35 mm, which simplifies installation.
Size Inner diameter Height Outside diameter Insert thickness Weight
  mm mm mm mm kg
PM-20 20 50 33 4 0,055

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGNEZA Fire collar, d 230 (price on request) [Code number: pm_230]
Details
pm_230

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • Housing consists of two parts, detachable
  • High fire resistance - EI-180
  • Products are certified
  • Metal parts are painted with powder paint which increases the corrosion resistance
  • Easy assembly/disassembly
  • Coefficient of expansion is not less than 900%
  • Collar is triggered at 15 seconds at temperature of +150 °C, complete overlap occurs at the intersection at 4 minute
  • Keeps characteristics at temperatures from -50 °C to +80 °C
  • 30 years lifetime
Outside diameter Inner diameter Height Thickness of thermally expanding liner Colour Weight
mm mm mm mm   gr
- 230 90 - light gray -

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGNEZA Fire collar, lock type "Light", gray, d 25 [Code number: pm_25]
Details
pm_25 320 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • Housing consists of two parts, detachable
  • High fire resistance - EI-180
  • Products are certified
  • Metal parts are painted with powder paint which increases the corrosion resistance
  • Easy assembly/disassembly
  • Coefficient of expansion is not less than 900%
  • Collar is triggered at 15 seconds at temperature of +150 °C, complete overlap occurs at the intersection at 4 minute
  • Keeps characteristics at temperatures from -50 °C to +80 °C
  • 30 years lifetime
  • Lock type: Light

Installation method

PM structure

 

  • The case is a metal cuff and is made of cold-rolled or galvanized steel (thickness from 0.5 to 2 mm). Painted with weatherproof paint.
  • The case is connected using a reliable Russian-made latch made of galvanized steel.
  • The fire-retardant liner is located inside the coupling, held by the cloves bent inward. They also provide directional expansion of the fire retardant liner during a fire.
  • The eyelets with holes can be easily bent. Their length is 35 mm, which simplifies installation.
Outside diameter Inner diameter Height Thickness of thermally expanding liner Colour Weight
mm mm mm mm   gr
38 25 50 4 gray 55

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGRAX-PM fire collar, d 32 (for pipes DN 25) [Code number: pm-25/20]
Details
pm-25/20 320 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • case consists of two parts
  • thickness of the OGRAX flame retardant liner is 10 mm
  • keeps operational characteristics at air humidity up to 100% in the temperature range from -50 °C to + 60 °C
  • high fire resistance (more than three parts, EI-180)
  • easy assembly/disassembly
  • no special maintenance
  • moisture resistance
  • durability
  • warranty period of operation - at least 25 years (under conditions precluding corrosion of the metal case)
External diameter Height Pipe diameter
mm mm mm
32 20 25
OGNEZA Fire collar, lock type "Light", red, d 25 [Code number: pm_25_krasnie]
Details
pm_25_krasnie 320 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • Housing consists of two parts, detachable
  • High fire resistance - EI-180
  • Products are certified
  • Metal parts are painted with powder paint which increases the corrosion resistance
  • Easy assembly/disassembly
  • Coefficient of expansion is not less than 900%
  • Collar is triggered at 15 seconds at temperature of +150 °C, complete overlap occurs at the intersection at 4 minute
  • Keeps characteristics at temperatures from -50 °C to +80 °C
  • 30 years lifetime
  • Lock type: Light

Installation method

PM structure

 

  • The case is a metal cuff and is made of cold-rolled or galvanized steel (thickness from 0.5 to 2 mm). Painted with weatherproof paint.
  • The case is connected using a reliable Russian-made latch made of galvanized steel.
  • The fire-retardant liner is located inside the coupling, held by the cloves bent inward. They also provide directional expansion of the fire retardant liner during a fire.
  • The eyelets with holes can be easily bent. Their length is 35 mm, which simplifies installation.
Outside diameter Inner diameter Height Thickness of thermally expanding liner Colour Weight
mm mm mm mm   gr
38 25 50 4 red 55

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGNEZA Fire collar, lock type "Light", gray, d 32 [Code number: pm_32]
Details
pm_32 342 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • Housing consists of two parts, detachable
  • High fire resistance - EI-180
  • Products are certified
  • Metal parts are painted with powder paint which increases the corrosion resistance
  • Easy assembly/disassembly
  • Coefficient of expansion is not less than 900%
  • Collar is triggered at 15 seconds at temperature of +150 °C, complete overlap occurs at the intersection at 4 minute
  • Keeps characteristics at temperatures from -50 °C to +80 °C
  • 30 years lifetime
  • Lock type: Light

Installation method

PM structure

 

  • The case is a metal cuff and is made of cold-rolled or galvanized steel (thickness from 0.5 to 2 mm). Painted with weatherproof paint.
  • The case is connected using a reliable Russian-made latch made of galvanized steel.
  • The fire-retardant liner is located inside the coupling, held by the cloves bent inward. They also provide directional expansion of the fire retardant liner during a fire.
  • The eyelets with holes can be easily bent. Their length is 35 mm, which simplifies installation.
Outside diameter Inner diameter Height Thickness of thermally expanding liner Colour Weight
mm mm mm mm   gr
46 32 50 4 gray 65

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGNEZA Fire prevention symmetrical sleeve, d 32, d1 150 (price on request) [Code number: pm_32_150]
Details
pm_32_150

Application purpose:

  • For pipeline communications made of combustible plastic materials (PP, PE, PVC)
  • For residential (including multi-apartment) buildings, hotels and hostels, social and medical institutions, shopping centers, airports and railway stations, industrial enterprises, etc
  • To protect premises from fire and smoke

Characteristics:

  • It is an elongated fire sleeve equipped with two liners made of thermally expandable material (one on each side);
  • Provides double fire protection - just one sleeve is enough for the length of the entire ceiling;
  • The body is detachable, there is a tie-lock, so that the symmetrical fire coupling can be used on already installed pipelines;
  • Metal parts are powder coated for corrosion protection;
  • The clutch begins to work already at the 15th second when the temperature rises to +150 ° C, the complete overlap of the assembly occurs at the fourth minute;
  • Swelling ratio: not less than 900%;
  • Product color: grey;
  • Fire resistance limit: 180 minutes;
  • Service life: 30 years.

Operating principle:

During a fire, the thermally expanding liner of the fire muff expands tenfold, resulting in the formation of a solid foam-coke foam that fills the hole in the ceiling. This is quite effective at blocking fire.

Size Outside diameter Through Hole Diameter (minimum) Inner diameter Length Insert thickness
  mm mm mm mm mm
PM-32 41 44 16, 20, 25, 32 150 4+(2+2+2+2)
OGNEZA Fire prevention symmetrical sleeve, d 32, d1 200 (price on request) [Code number: pm_32_200]
Details
pm_32_200

Application purpose:

  • For pipeline communications made of combustible plastic materials (PP, PE, PVC)
  • For residential (including multi-apartment) buildings, hotels and hostels, social and medical institutions, shopping centers, airports and railway stations, industrial enterprises, etc
  • To protect premises from fire and smoke

Characteristics:

  • It is an elongated fire sleeve equipped with two liners made of thermally expandable material (one on each side);
  • Provides double fire protection - just one sleeve is enough for the length of the entire ceiling;
  • The body is detachable, there is a tie-lock, so that the symmetrical fire coupling can be used on already installed pipelines;
  • Metal parts are powder coated for corrosion protection;
  • The clutch begins to work already at the 15th second when the temperature rises to +150 ° C, the complete overlap of the assembly occurs at the fourth minute;
  • Swelling ratio: not less than 900%;
  • Product color: grey;
  • Fire resistance limit: 180 minutes;
  • Service life: 30 years.

Operating principle:

During a fire, the thermally expanding liner of the fire muff expands tenfold, resulting in the formation of a solid foam-coke foam that fills the hole in the ceiling. This is quite effective at blocking fire.

Size Outside diameter Through Hole Diameter (minimum) Inner diameter Length Insert thickness
  mm mm mm mm mm
PM-32 41 44 16, 20, 25, 32 200 4+(2+2+2+2)
OGNEZA Fire prevention symmetrical sleeve, d 32, d1 250 (price on request) [Code number: pm_32_250]
Details
pm_32_250

Application purpose:

  • For pipeline communications made of combustible plastic materials (PP, PE, PVC)
  • For residential (including multi-apartment) buildings, hotels and hostels, social and medical institutions, shopping centers, airports and railway stations, industrial enterprises, etc
  • To protect premises from fire and smoke

Characteristics:

  • It is an elongated fire sleeve equipped with two liners made of thermally expandable material (one on each side);
  • Provides double fire protection - just one sleeve is enough for the length of the entire ceiling;
  • The body is detachable, there is a tie-lock, so that the symmetrical fire coupling can be used on already installed pipelines;
  • Metal parts are powder coated for corrosion protection;
  • The clutch begins to work already at the 15th second when the temperature rises to +150 ° C, the complete overlap of the assembly occurs at the fourth minute;
  • Swelling ratio: not less than 900%;
  • Product color: grey;
  • Fire resistance limit: 180 minutes;
  • Service life: 30 years.

Operating principle:

During a fire, the thermally expanding liner of the fire muff expands tenfold, resulting in the formation of a solid foam-coke foam that fills the hole in the ceiling. This is quite effective at blocking fire.

Size Outside diameter Through Hole Diameter (minimum) Inner diameter Length Insert thickness
  mm mm mm mm mm
PM-32 41 44 16, 20, 25, 32 250 4+(2+2+2+2)
OGRAX-PM fire collar, d 42 (for pipes DN 32) [Code number: pm-32/30]
Details
pm-32/30 336 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • case consists of two parts
  • thickness of the OGRAX flame retardant liner is 10 mm
  • keeps operational characteristics at air humidity up to 100% in the temperature range from -50 °C to + 60 °C
  • high fire resistance (more than three parts, EI-180)
  • easy assembly/disassembly
  • no special maintenance
  • moisture resistance
  • durability
  • warranty period of operation - at least 25 years (under conditions precluding corrosion of the metal case)
External diameter Height Pipe diameter
mm mm mm
42 30 32
OGNEZA Fire prevention symmetrical sleeve, d 32, d1 300 (price on request) [Code number: pm_32_300]
Details
pm_32_300

Application purpose:

  • For pipeline communications made of combustible plastic materials (PP, PE, PVC)
  • For residential (including multi-apartment) buildings, hotels and hostels, social and medical institutions, shopping centers, airports and railway stations, industrial enterprises, etc
  • To protect premises from fire and smoke

Characteristics:

  • It is an elongated fire sleeve equipped with two liners made of thermally expandable material (one on each side);
  • Provides double fire protection - just one sleeve is enough for the length of the entire ceiling;
  • The body is detachable, there is a tie-lock, so that the symmetrical fire coupling can be used on already installed pipelines;
  • Metal parts are powder coated for corrosion protection;
  • The clutch begins to work already at the 15th second when the temperature rises to +150 ° C, the complete overlap of the assembly occurs at the fourth minute;
  • Swelling ratio: not less than 900%;
  • Product color: grey;
  • Fire resistance limit: 180 minutes;
  • Service life: 30 years.

Operating principle:

During a fire, the thermally expanding liner of the fire muff expands tenfold, resulting in the formation of a solid foam-coke foam that fills the hole in the ceiling. This is quite effective at blocking fire.

Size Outside diameter Through Hole Diameter (minimum) Inner diameter Length Insert thickness
  mm mm mm mm mm
PM-32 41 44 16, 20, 25, 32 300 4+(2+2+2+2)
OGNEZA Fire collar, lock type "Light", red, d 32 [Code number: pm_32_krasnie]
Details
pm_32_krasnie 342 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • Housing consists of two parts, detachable
  • High fire resistance - EI-180
  • Products are certified
  • Metal parts are painted with powder paint which increases the corrosion resistance
  • Easy assembly/disassembly
  • Coefficient of expansion is not less than 900%
  • Collar is triggered at 15 seconds at temperature of +150 °C, complete overlap occurs at the intersection at 4 minute
  • Keeps characteristics at temperatures from -50 °C to +80 °C
  • 30 years lifetime
  • Lock type: Light

Installation method

PM structure

 

  • The case is a metal cuff and is made of cold-rolled or galvanized steel (thickness from 0.5 to 2 mm). Painted with weatherproof paint.
  • The case is connected using a reliable Russian-made latch made of galvanized steel.
  • The fire-retardant liner is located inside the coupling, held by the cloves bent inward. They also provide directional expansion of the fire retardant liner during a fire.
  • The eyelets with holes can be easily bent. Their length is 35 mm, which simplifies installation.
Outside diameter Inner diameter Height Thickness of thermally expanding liner Colour Weight
mm mm mm mm   gr
46 32 50 4 red 65

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGNEZA Fire collar, lock type "Light", gray, d 40 [Code number: pm_40]
Details
pm_40 360 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • Housing consists of two parts, detachable
  • High fire resistance - EI-180
  • Products are certified
  • Metal parts are painted with powder paint which increases the corrosion resistance
  • Easy assembly/disassembly
  • Coefficient of expansion is not less than 900%
  • Collar is triggered at 15 seconds at temperature of +150 °C, complete overlap occurs at the intersection at 4 minute
  • Keeps characteristics at temperatures from -50 °C to +80 °C
  • 30 years lifetime
  • Lock type: Light

Installation method

PM structure

 

  • The case is a metal cuff and is made of cold-rolled or galvanized steel (thickness from 0.5 to 2 mm). Painted with weatherproof paint.
  • The case is connected using a reliable Russian-made latch made of galvanized steel.
  • The fire-retardant liner is located inside the coupling, held by the cloves bent inward. They also provide directional expansion of the fire retardant liner during a fire.
  • The eyelets with holes can be easily bent. Their length is 35 mm, which simplifies installation.
Outside diameter Inner diameter Height Thickness of thermally expanding liner Colour Weight
mm mm mm mm   gr
54 40 50 4 gray 75

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGRAX-PM fire collar, d 50 (for pipes DN 40) [Code number: pm-40/30]
Details
pm-40/30 336 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • case consists of two parts
  • thickness of the OGRAX flame retardant liner is 10 mm
  • keeps operational characteristics at air humidity up to 100% in the temperature range from -50 °C to + 60 °C
  • high fire resistance (more than three parts, EI-180)
  • easy assembly/disassembly
  • no special maintenance
  • moisture resistance
  • durability
  • warranty period of operation - at least 25 years (under conditions precluding corrosion of the metal case)
External diameter Height Pipe diameter
mm mm mm
50 30 40
OGNEZA Fire collar, lock type "Light", red, d 40 [Code number: pm_40_krasnie]
Details
pm_40_krasnie 360 rub

Application purposes:

  • For preventing the spread of fire and combustion products through ceilings and walls

Characteristics:

  • Housing consists of two parts, detachable
  • High fire resistance - EI-180
  • Products are certified
  • Metal parts are painted with powder paint which increases the corrosion resistance
  • Easy assembly/disassembly
  • Coefficient of expansion is not less than 900%
  • Collar is triggered at 15 seconds at temperature of +150 °C, complete overlap occurs at the intersection at 4 minute
  • Keeps characteristics at temperatures from -50 °C to +80 °C
  • 30 years lifetime
  • Lock type: Light

Installation method

PM structure

 

  • The case is a metal cuff and is made of cold-rolled or galvanized steel (thickness from 0.5 to 2 mm). Painted with weatherproof paint.
  • The case is connected using a reliable Russian-made latch made of galvanized steel.
  • The fire-retardant liner is located inside the coupling, held by the cloves bent inward. They also provide directional expansion of the fire retardant liner during a fire.
  • The eyelets with holes can be easily bent. Their length is 35 mm, which simplifies installation.
Outside diameter Inner diameter Height Thickness of thermally expanding liner Colour Weight
mm mm mm mm   gr
54 40 50 4 red 75

Download installation instruction: OGNEZA Fire collar OGNEZA Fire collar

OGNEZA Fire prevention symmetrical sleeve, d 50, d1 150 (price on request) [Code number: pm_50_150]
Details
pm_50_150

Application purpose:

  • For pipeline communications made of combustible plastic materials (PP, PE, PVC)
  • For residential (including multi-apartment) buildings, hotels and hostels, social and medical institutions, shopping centers, airports and railway stations, industrial enterprises, etc
  • To protect premises from fire and smoke

Characteristics:

  • It is an elongated fire sleeve equipped with two liners made of thermally expandable material (one on each side);
  • Provides double fire protection - just one sleeve is enough for the length of the entire ceiling;
  • The body is detachable, there is a tie-lock, so that the symmetrical fire coupling can be used on already installed pipelines;
  • Metal parts are powder coated for corrosion protection;
  • The clutch begins to work already at the 15th second when the temperature rises to +150 ° C, the complete overlap of the assembly occurs at the fourth minute;
  • Swelling ratio: not less than 900%;
  • Product color: grey;
  • Fire resistance limit: 180 minutes;
  • Service life: 30 years.

Operating principle:

During a fire, the thermally expanding liner of the fire muff expands tenfold, resulting in the formation of a solid foam-coke foam that fills the hole in the ceiling. This is quite effective at blocking fire.

Size Outside diameter Through Hole Diameter (minimum) Inner diameter Length Insert thickness
  mm mm mm mm mm
PM-50 59 62 40, 50 150 4+(4)
OGNEZA Fire prevention symmetrical sleeve, d 50, d1 200 (price on request) [Code number: pm_50_200]
Details
pm_50_200

Application purpose:

  • For pipeline communications made of combustible plastic materials (PP, PE, PVC)
  • For residential (including multi-apartment) buildings, hotels and hostels, social and medical institutions, shopping centers, airports and railway stations, industrial enterprises, etc
  • To protect premises from fire and smoke

Characteristics:

  • It is an elongated fire sleeve equipped with two liners made of thermally expandable material (one on each side);
  • Provides double fire protection - just one sleeve is enough for the length of the entire ceiling;
  • The body is detachable, there is a tie-lock, so that the symmetrical fire coupling can be used on already installed pipelines;
  • Metal parts are powder coated for corrosion protection;
  • The clutch begins to work already at the 15th second when the temperature rises to +150 ° C, the complete overlap of the assembly occurs at the fourth minute;
  • Swelling ratio: not less than 900%;
  • Product color: grey;
  • Fire resistance limit: 180 minutes;
  • Service life: 30 years.

Operating principle:

During a fire, the thermally expanding liner of the fire muff expands tenfold, resulting in the formation of a solid foam-coke foam that fills the hole in the ceiling. This is quite effective at blocking fire.

Size Outside diameter Through Hole Diameter (minimum) Inner diameter Length Insert thickness
  mm mm mm mm mm
PM-50 59 62 40, 50 200 4+(4)